CONSOLIDATED AND COMBINED FINANCIAL STATEMENT DETAILS - SCHEDULE OF PROPERTY AND EQUIPMENT, NET (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Property and equipment, net of accumulated depreciation and amortization :
Property and equipment, gross	$ 77,660	$ 41,722
Accumulated depreciation and amortization	(24,368)	(18,077)
Property and equipment, net of accumulated depreciation and amortization	53,292	23,645
Computer equipment and capitalized software
Property and equipment, net of accumulated depreciation and amortization :
Property and equipment, gross	41,853	27,309
Buildings and leasehold improvements
Property and equipment, net of accumulated depreciation and amortization :
Property and equipment, gross	13,984	6,075
Furniture and other equipment
Property and equipment, net of accumulated depreciation and amortization :
Property and equipment, gross	6,222	3,140
Projects in progress
Property and equipment, net of accumulated depreciation and amortization :
Property and equipment, gross	12,801	$ 5,198
Land
Property and equipment, net of accumulated depreciation and amortization :
Property and equipment, gross	$ 2,800